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aperture priority
Why isnt the flash disable when I set to aperture priority? Shouldn't it just lower the shutter speed to allow more light instead of initiating the flash?..

Comments (7)

Pigxel wrote:.

Why isnt the flash disable when I set to aperture priority?.

If the flash is on, it will fire. So turn off (or push down, if using the built-in flash) the flash if you don't want it..

Seen in a fortune cookie:Fear is the darkroom where negatives are developed..

Comment #1

I do have the pushed down, but I get a flash icon display when I press the shutter button in aperture priority mode. So my question is, is the camera taking the flash into consideration when it sets the shutter speed?.

Nickleback wrote:.

Pigxel wrote:.

Why isnt the flash disable when I set to aperture priority?.

If the flash is on, it will fire. So turn off (or push down, ifusing the built-in flash) the flash if you don't want it..

Seen in a fortune cookie:Fear is the darkroom where negatives are developed..

Comment #2

Maybe the camera suggests you to use the flash.VictorBucuresti, Romaniahttp://s106.photobucket.com/albums/m268/victor_petcu/http://picasaweb.google.com/teodor.nitica/..

Comment #3

No, the suggested shutter speed in Av mode does NOT take into account use of the flash, ONLY the ambient lighting conditions..

Pigxel wrote:.

I do have the pushed down, but I get a flash icon display when Ipress the shutter button in aperture priority mode. So my questionis, is the camera taking the flash into consideration when it setsthe shutter speed?.

Nickleback wrote:.

Pigxel wrote:.

Why isnt the flash disable when I set to aperture priority?.

If the flash is on, it will fire. So turn off (or push down, ifusing the built-in flash) the flash if you don't want it..

Seen in a fortune cookie:Fear is the darkroom where negatives are developed..

Comment #4

Pigxel wrote:.

I do have the pushed down, but I get a flash icon display when Ipress the shutter button in aperture priority mode. So my questionis, is the camera taking the flash into consideration when it setsthe shutter speed?.

Probably this is warning that there is a risk of camera shake because of the slow shutter speed. If the camera is on a tripod, you can ignore that. But if you are hand holding the camera, it is a useful reminder..

You should consider the risk of shake and what you want to do about it (which may be to do nothing, or it might be change the ISO or aperture, or find something solid to support the camera and reduce shake.).Regards,Peter..

Comment #5

Pigxel wrote:.

I do have the pushed down, but I get a flash icon display when Ipress the shutter button in aperture priority mode. So my questionis, is the camera taking the flash into consideration when it setsthe shutter speed?.

Nickleback wrote:.

Pigxel wrote:.

Why isnt the flash disable when I set to aperture priority?.

If the flash is on, it will fire. So turn off (or push down, ifusing the built-in flash) the flash if you don't want it..

Seen in a fortune cookie:Fear is the darkroom where negatives are developed.

No - the speed it gives you only takes flash into account if flash is On..

As baloo buc said, it's suggesting that you use flash because given the available light, and the aperture that you have chosen in A-priority mode, the resulting calculated shutter speed is going to be (according to normal guidelines) too slow to get a sharp picture..

Ignore this-.

If you don't want to use flash, take the picture and see if you agree. If exposure is too dark, or it's too blurry because of the slow shutter speed, open up the aperture more (lower #)..

If you can't/don't want to change the aperture wider, try a tripod and/or raise the ISO..

If still not good, then you have to use the flash, at which point it will recalc the shutter speed it needs with the flash used...

Comment #6

When the camera meters a scene based on the settings you program into the camera (in this case, aperature and ISO) it adjusts the shutter speed to capture the appropriate amount of ambient light based on the reflective meter value..

Often times when flash is involved the camera defaults to a standard shutter speed (say 1/30 second) when in dark settings. All things being equal, your aperature controls how much the flash effects the scene (usually in the foreground), the shutter speed controls the ambient light in the scene (usually in the background), and the ISO adjusts the intensity of the light yeilding elements in a scene..

For example:.

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In the image above, the flash power was aprox 1/4 of full power, ISO 400, aperature was somewhere between 2.8 and 4.0 and the shutter speed was set to about 1/5 second..

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With this image the settings were similar however the shutter speed was set to 1/2 second to increase the light in the dark scene.

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In this image the shutter is left open for a full second. The brief duration of the flash stops the movement of the DJ in the shot, however the ambient lights create an input for the sensor and continue to record while the shutter is open..

If you want to stop your flash from firing in a scene you have to disable to flash manually. However, learning to balance the light in the scene manually is far more benefitial unless all you care to do is adjust the depth of field..

My advice is that if your camera is telling you "hey, it's too dark in here to take this photo without flash," you might want to open your aperature up more and/or increase your ISO in order to allow the camera to operate at a higher shutterspeed..

Pigxel wrote:.

I do have the pushed down, but I get a flash icon display when Ipress the shutter button in aperture priority mode. So my questionis, is the camera taking the flash into consideration when it setsthe shutter speed?.

Nickleback wrote:.

Pigxel wrote:.

Why isnt the flash disable when I set to aperture priority?.

If the flash is on, it will fire. So turn off (or push down, ifusing the built-in flash) the flash if you don't want it..

Seen in a fortune cookie:Fear is the darkroom where negatives are developed.

TANK.

'Why is it everytime I need to get somewhere, we get waylaid by jackassery?' - Dr. Venturehttp://www.myspace.com/servantoflove.

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Comment #7

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This question was taken from a support group/message board and re-posted here so others can learn from it.

 

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